Nowadays,trains_more and more quickly. [ ]A. traveled B. travel C. have traveled D. are traveling-八年

题目简介

Nowadays,trains_more and more quickly. [ ]A. traveled B. travel C. have traveled D. are traveling-八年

题目详情

Nowadays, trains ________ more and more quickly.    

A. traveled                
B. travel    
C. have traveled            
D. are traveling
题型:单选题难度:中档来源:同步题

答案

B

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